1242959026 has 4 divisors (see below), whose sum is σ = 1864438542. Its totient is φ = 621479512.

The previous prime is 1242959017. The next prime is 1242959041. The reversal of 1242959026 is 6209592421.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6209592421 = 17783 ⋅349187.

It can be written as a sum of positive squares in only one way, i.e., 1017929025 + 225030001 = 31905^2 + 15001^2 .

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 1242959026.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 310739755 + ... + 310739758.

Almost surely, 2^1242959026 is an apocalyptic number.

1242959026 is a deficient number, since it is larger than the sum of its proper divisors (621479516).

1242959026 is an equidigital number, since it uses as much as digits as its factorization.

1242959026 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 621479515.

The product of its (nonzero) digits is 77760, while the sum is 40.

The square root of 1242959026 is about 35255.6240336205. The cubic root of 1242959026 is about 1075.1909596947.

The spelling of 1242959026 in words is "one billion, two hundred forty-two million, nine hundred fifty-nine thousand, twenty-six".